某局点S10510 堆叠口负载不均衡

现场设备两台S105设备进行堆叠，由于现场的业务还在逐步迁移的阶段，只有主设备上单接了Bras设备。业务网关在bras上。

目前业务高峰期会有卡顿的情况，单个堆叠口跨框流量较大达到98%，另一个堆叠口基本没有发包。

当前收集诊断发现接口流量不均的现象还是比较明显： 

Ten-GigabitEthernet2/1/0/47

Current state: UP

IP packet frame type: Ethernet II, hardware address: 50da-0063-f000

Description: Ten-GigabitEthernet2/1/0/47 Interface

Bandwidth: 10000000 kbps

Loopback is not set

Media type is optical fiber, port hardware type is 10G_BASE_SR_SFP

10Gbps-speed mode, full-duplex mode

Link speed type is autonegotiation, link duplex type is autonegotiation

Maximum frame length: 9216

MDI type: Automdix

Last link flapping: 40 weeks 5 days 11 hours 52 minutes

Last clearing of counters: 12:30:27 Thu 10/14/2021

Current system time:2022-03-16 13:31:59

Last time when physical state changed to up:2021-06-04 01:39:26

Last time when physical state changed to down:2021-06-04 01:37:34

Peak input rate: 51903440 bytes/sec, at 2022-03-16 12:30:02

 Peak output rate: 33333741 bytes/sec, at 2022-01-12 08:32:34

 Last 300 seconds input: 155351 packets/sec 35761547 bytes/sec 3%

Last 300 seconds output: 4553 packets/sec 2049865 bytes/sec 0%

Input (total):  56644298010 packets, 14353249120033 bytes

         49045525292 unicasts, 2706239849 broadcasts, 4892532869 multicasts, 0 pauses

Input (normal):  56644298010 packets, - bytes

         49045525292 unicasts, 2706239849 broadcasts, 4892532869 multicasts, 0 pauses

Input:  0 input errors, 0 runts, 0 giants, 0 throttles

         0 CRC, 0 frame, - overruns, 0 aborts

         - ignored, - parity errors

Output (total): 45765796775 packets, 25742510781995 bytes

         35459259452 unicasts, 4268213630 broadcasts, 6038323692 multicasts, 0 pauses

Output (normal): 45765796774 packets, - bytes

         35459259452 unicasts, 4268213630 broadcasts, 6038323692 multicasts, 0 pauses

Output: 0 output errors, - underruns, - buffer failures

         0 aborts, 0 deferred, 0 collisions, 0 late collisions

         0 lost carrier, - no carrier

Ten-GigabitEthernet2/1/0/48

Current state: UP

IP packet frame type: Ethernet II, hardware address: 50da-0063-f000

Description: Ten-GigabitEthernet2/1/0/48 Interface

Bandwidth: 10000000 kbps

Loopback is not set

Media type is optical fiber, port hardware type is 10G_BASE_SR_SFP

10Gbps-speed mode, full-duplex mode

Link speed type is autonegotiation, link duplex type is autonegotiation

Maximum frame length: 9216

MDI type: Automdix

Last link flapping: 40 weeks 5 days 11 hours 52 minutes

Last clearing of counters: 12:30:27 Thu 10/14/2021

Current system time:2022-03-16 13:31:59

Last time when physical state changed to up:2021-06-04 01:39:26

Last time when physical state changed to down:2021-06-04 01:37:34

Peak input rate: 1243764786 bytes/sec, at 2022-03-12 12:40:10

 Peak output rate: 458000032 bytes/sec, at 2021-10-21 11:47:39

 Last 300 seconds input: 40393 packets/sec 14614101 bytes/sec 1%

Last 300 seconds output: 355497 packets/sec 447727992 bytes/sec 36%

Input (total):  3389306197861 packets, 4013678149761071 bytes

         3388620742875 unicasts, 0 broadcasts, 685454986 multicasts, 0 pauses

Input (normal):  3389306197861 packets, - bytes

         3388620742875 unicasts, 0 broadcasts, 685454986 multicasts, 0 pauses

Input:  0 input errors, 0 runts, 0 giants, 0 throttles

         0 CRC, 0 frame, - overruns, 0 aborts

         - ignored, - parity errors

Output (total): 1250558303481 packets, 1509413180342563 bytes

         1250378097790 unicasts, 0 broadcasts, 180205691 multicasts, 0 pauses

Output (normal): 1250558303481 packets, - bytes

         1250378097790 unicasts, 0 broadcasts, 180205691 multicasts, 0 pauses

Output: 0 output errors, - underruns, - buffer failures

         0 aborts, 0 deferred, 0 collisions, 0 late collisions

         0 lost carrier, - no carrier

查看堆叠状态：

  ==== display irf cOnfiguration==== 

 MemberID NewID    IRF-Port1                     IRF-Port2

1        1        disable                       Ten-GigabitEthernet1/1/0/47  

                                                 Ten-GigabitEthernet1/1/0/48  

 2        2        Ten-GigabitEthernet2/1/0/47   disable                      

                   Ten-GigabitEthernet2/1/0/48  

 ==== display irf cOnfiguration==== 

两个框的堆叠口都在一块单板上，不会出现本板堆叠口优先的情况。单播负载不均衡是hash不均导致的，建议修改负载分担模式

另外跨框流量太多，建议把聚合做成跨框的，比如聚合204，入方向流量很大，但1框上的1/7/0/1端口没有被选中，被SHUT DOWN了。

Aggregate Interface: Bridge-Aggregation204

Creation Mode: Manual

Aggregation Mode: Dynamic

Loadsharing Type: Shar

Management VLANs: None

System ID: 0x8000, 50da-0063-f600

Local:

  Port                Status   Priority Index    Oper-Key               Flag

  FGE1/7/0/1          U        32768    38       17                     {AC}

  FGE2/7/0/1(R)       S        32768    37       17                     {ACDEF}

Remote:

  Actor               Priority Index    Oper-Key SystemID               Flag  

  FGE1/7/0/1          32768    5        6        0x8000, 642f-c7b7-6200 {AEF}

  FGE2/7/0/1          32768    9        6        0x8000, 642f-c7b7-6200 {ACDEF}

FortyGigE2/7/0/1

Current state: UP

Line protocol state: UP

IP packet frame type: Ethernet II, hardware address: 50da-0063-f000

Description: FortyGigE2/7/0/1 Interface

Bandwidth: 40000000 kbps

。。。。。。。。。。。。。。。。。。。。。

Last time when physical state changed to up:2022-02-25 16:35:31

Last time when physical state changed to down:2022-02-25 16:12:14

Peak input rate: 1951616667 bytes/sec, at 2022-03-16 13:31:39

 Peak output rate: 324107977 bytes/sec, at 2022-03-15 16:23:59

 Last 300 seconds input: 1536513 packets/sec 1951345176 bytes/sec 40%

Last 300 seconds output: 789795 packets/sec 180885569 bytes/sec 4%

由于无法确定客户现场的具体流量类型，客户最好按照相应的参数来测试，看哪种负载分担模式效果最好。